毕业设计论文!!凸轮机构的三维设计、装配与运动仿真.doc
凸轮机构的三维设计、装配与运动仿真(全套三维及仿真)
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压缩包内文档预览:(预览前20页/共41页)
编号:9670389
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上传时间:2018-03-20
上传人:机****料
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凸轮
机构
三维设计
装配
运动
仿真
全套
三维
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英文资料HIGHSPEEDMILLINGHIGHSPEEDMACHININGISANADVANCEDMANUFACTURINGTECHNOLOGY,DIFFERENTFROMTHETRADITIONALPROCESSINGMETHODSTHESPINDLESPEED,CUTTINGFEEDRATE,CUTTINGASMALLAMOUNTOFUNITSWITHINTHETIMEOFREMOVALOFMATERIALHASINCREASEDTHREETOSIXTIMESWITHHIGHEFFICIENCY,HIGHPRECISIONANDHIGHQUALITYSURFACEASTHEBASICCHARACTERISTICSOFTHEAUTOMOBILEINDUSTRY,AEROSPACE,MOLDMANUFACTURINGANDINSTRUMENTATIONINDUSTRY,SUCHASACCESSTOAWIDERANGEOFAPPLICATIONS,HASMADESIGNIFICANTECONOMICBENEFITS,ISTHECONTEMPORARYIMPORTANCEOFADVANCEDMANUFACTURINGTECHNOLOGYFORALONGTIME,PEOPLEDIEONTHEPROCESSINGHASBEENUSINGAGRINDINGORMILLINGEDMEDMPROCESSING,GRINDING,POLISHINGMETHODSALTHOUGHTHEHIGHHARDNESSOFTHEEDMMACHINEPARTS,BUTTHELOWERTHEPRODUCTIVITYOFITSAPPLICATIONISLIMITEDWITHTHEDEVELOPMENTOFHIGHSPEEDPROCESSINGTECHNOLOGY,USEDTOREPLACEHIGHSPEEDCUTTING,GRINDINGANDPOLISHINGPROCESSTODIEPROCESSINGHASBECOMEPOSSIBLETOSHORTENTHEPROCESSINGCYCLE,PROCESSINGANDRELIABLEQUALITYASSURANCE,LOWERPROCESSINGCOSTS1ONEOFTHEADVANTAGESOFHIGHSPEEDMACHININGHIGHSPEEDMACHININGASADIEEFFICIENTMANUFACTURING,HIGHQUALITY,LOWPOWERCONSUMPTIONINANADVANCEDMANUFACTURINGTECHNOLOGYINCONVENTIONALMACHININGINASERIESOFPROBLEMSHASPLAGUEDBYHIGHSPEEDMACHININGOFTHEAPPLICATIONHAVEBEENRESOLVED11INCREASEPRODUCTIVITYHIGHSPEEDCUTTINGOFTHESPINDLESPEED,FEEDRATECOMPAREDWITHTRADITIONALMACHINING,INTHENATUREOFTHELEAP,THEMETALREMOVALRATEINCREASED30PERCENTTO40PERCENT,CUTTINGFORCEREDUCEDBY30PERCENT,THECUTTINGTOOLLIFEINCREASEDBY70HARDENEDPARTSCANBEPROCESSED,AFIXTUREINMANYPARTSTOBECOMPLETEDROUGH,SEMIFINISHINGANDFINE,ANDALLOTHERPROCESSES,THECOMPLEXCANREACHPARTSOFTHESURFACEQUALITYREQUIREMENTS,THUSINCREASINGTHEPROCESSINGPRODUCTIVITYANDCOMPETITIVENESSOFPRODUCTSINTHEMARKET12IMPROVEPROCESSINGACCURACYANDSURFACEQUALITYHIGHSPEEDMACHINESGENERALLYHAVEHIGHRIGIDITYANDPRECISION,ANDOTHERCHARACTERISTICS,PROCESSING,CUTTINGTHEDEPTHOFSMALL,FASTANDFEED,CUTTINGFORCELOW,THEWORKPIECETOREDUCEHEATDISTORTION,ANDHIGHPRECISIONMACHINING,SURFACEROUGHNESSSMALLMILLINGWILLBENOHIGHSPEEDPROCESSINGANDMILLINGMARKSTHESURFACESOTHATTHEPARTSGREATLYENHANCETHEQUALITYOFTHESURFACEPROCESSINGALUMINUMWHENUPRA0406UM,PIECESOFSTEELPROCESSINGATUPTORA0204UM13CUTTINGREDUCETHEHEATBECAUSETHEMAINAXISMILLINGMACHINEHIGHSPEEDROTATION,CUTTINGASHALLOWCUTTING,ANDFEEDVERYQUICKLY,ANDTHEBLADELENGTHOFTHEWORKPIECECONTACTSANDCONTACTTIMEISVERYSHORT,ADECREASEOFBLADESANDPARTSOFTHEHEATCONDUCTIONHIGHSPEEDCUTTINGBYDRYMILLINGOROILCOOKEDUPABSOLUTEMISTLUBRICATIONSYSTEM,TOAVOIDTHETRADITIONALPROCESSINGTOOLINCONTACTWITHTHEWORKPIECEANDALOTOFSHORTCOMINGSTOENSURETHATTHETOOLISNOTHIGHTEMPERATUREUNDERTHECONDITIONSOFWORK,EXTENDEDTOOLLIFE14THISISCONDUCIVETOPROCESSINGTHINWALLEDPARTSHIGHSPEEDCUTTINGOFSMALLCUTTINGFORCE,AHIGHERDEGREEOFSTABILITY,MACHINABLEWITHHIGHQUALITYEMPLOYEESCOMPAREDTOTHECOMPANYMAYBEVERYGOOD,BUTOTHERTHANTHECOMPANYSEMPLOYEESMAYSUANBULEOUTSTANDINGWORKPERFORMANCEFOROURCHINAPRACTICE,WEUSETHEMODELSTODETERMINETHEMETHODOFSTAFFTRAININGNEEDSARESIMPLEANDEFFECTIVETHISSTUDYMODELSCANBEANEXTERNALOBJECT,ITCANALSOBEACOMBINATIONOFINTERNALANDEXTERNALWEMUSTFIRSTCLEARSTRATEGYFORTHEDEVELOPMENTOFENTERPRISESTHROUGHTHEINTERNALANDEXTERNALBUSINESSENVIRONMENTANDORGANIZATIONALRESOURCES,SUCHASANALYSIS,THEFUTUREDEVELOPMENTOFACLEARBUSINESSGOALSANDOPERATIONALPRIORITIESACCORDINGTOTHEBUSINESSDEVELOPMENTSTRATEGYCANBECOMPAREDTOFINDTHEBUSINESSMODELS,THROUGHACOMPARATIVEANALYSISOFTHEFINALIZATIONOFBUSINESSMODELSINDETERMININGBUSINESSMODELS,A,ISTHEUNDERSTANDINGOFITSDEVELOPMENTSTRATEGY,ORITSMARKETSHAREANDMARKETGROWTHRATE,ORTHESTAFFOFTHESITUATION,ANDSOON,ACCORDINGTOTHECOMPANIESTODETERMINETHEACTUALSITUATIONASENTERPRISESINDIFFERENTPERIODOFDEVELOPMENT,ITSFOCUSISDIFFERENT,WHICHMEANSTHATENTERPRISESNEEDTOINVESTTHEMANPOWERANDFINANCIALRESOURCESTHEFOCUSISDIFFERENTSOINACERTAINPERIODOFTIME,ENTERPRISESSHOULDACCURATELYSELECTEDTHEIRBUSINESSMODELSCOMPAREDWITHTHEDEPARTMENTSANDPOSTS,SOMOREPRACTICALSIGNIFICANCE,BECAUSETHEBUSINESSMODELSARENOTALWAYSGOOD,BUTTOCOMPARESOMEASPECTSDIDNOTHAVEMUCHPRACTICALSIGNIFICANCE,FURTHERMORETHISCANMOREFULLYCONCENTRATEONTHEBUSINESSUSEOFLIMITEDRESOURCESIDENTIFYBUSINESSMODELS,ANDTHENTAKETHEENTERPRISEOFTHECORRESPONDINGDEPARTMENTSANDSTAFFWITHTHEBUSINESSMODELSFORCOMPARISON,THETWOCANBEFOUNDINTHEPERFORMANCEGAP,ACOMPARATIVEANALYSISTOFINDREASONS,INACCORDANCEWITHTHISBUSINESSREALITY,THEFINALIDENTIFICATIONOFTRAININGNEEDSTHECOSTOFTRAININGISNEEDED,IFNOTTHROUGHANEFFECTIVEWAYTODETERMINEWHETHERCOMPANIESNEEDTOTRAINANDTHETRAININGOFTHEWAY,BUTBLINDTOTRAINING,SUCHTRAININGISDIFFICULTTOACHIEVETHEDESIREDRESULTSACOMPARISONONLYDIFFERENCEBETWEENTHISMODELISSIMPLEANDPRACTICALTRAINING15CANBEPARTOFSOMEALTERNATIVETECHNOLOGY,SUCHASEDM,GRINDINGHIGHINTENSITYANDHIGHHARDNESSPROCESSINGHIGHSPEEDCUTTINGAMAJORFEATUREOFHIGHSPEEDCUTTINGMACHINEHASTHEHARDNESSOFHRC60PARTSWITHTHEUSEOFCOATEDCARBIDECUTTERMOLDPROCESSING,DIRECTLYTOTHEINSTALLATIONOFAHARDENEDTOOLSTEELPROCESSINGFORMING,EFFECTIVELYAVOIDTHEINSTALLATIONOFSEVERALPARTSOFTHEFIXTUREERRORANDIMPROVETHEPARTSOFTHEGEOMETRICLOCATIONACCURACYINTHEMOLDOFTRADITIONALPROCESSING,HEATTREATMENTHARDENINGOFTHEWORKPIECEREQUIREDEDM,HIGHSPE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SPEED,HIGHFINISHMACHININGTECHNOLOGYANDNEWTRENDEQUIPPEDTHEEFFICIENCY,QUALITYARESUBJAVANUFACTURINGTECHNOLOGYHIGHSPEED,HIGHFINISHMACHININGTECHNOLOGYCANRAISETHEEFFICIENCYGREATLY,IMPROVETHEQUALITYANDGRADEOFTHEPRODUCTS,SHORTENPRODUCTIONCYCLEANDIMPROVETHEMARKETCOMPETITIVEPOWERJAPANCARRIESTHETECHNOLOGICALRESEARCHASSOCIATIONFIRSTTOCLASSIFYITASONEOFTHE5GREATMODERNMANUFACTURINGTECHNOLOGIESFORTHIS,LEARNCIRPTOCONFIRMITASTHECENTREINTHE21STCENTURYANDSTUDYONEOFTHEDIRECTIONSININTERNATIONALPRODUCTIONENGINEERINGINTHEFIELDOFCARINDUSTRY,PRODUCEONESECONDWHENBEATSUCHASPRODUCTIONOF300,000/VEHICLEPERYEAR,ANDMANYVARIETYPROCESSITISCARTHATEQUIPKEYPROBLEMTHATMUSTBESOLVEDONEOFINTHEFIELDSOFAVIATIONANDAEROSPACEINDUSTRY,SPAREPARTSOFITSPROCESSINGAREMOSTLYTHETHINWALLANDTHINMUSCLE,RIGIDITYISVERYBAD,THEMATERIALISALUMINIUMORALUMINIUMALLOY,ONLYINASITUATIONTHATCUTTHESPEEDANDCUTSTRENGTHVERYSMALLHIGH,COULDPROCESSTHESEMUSCLES,WALLSADOPTLARGESCALEWHOLEALUMINIUMALLOYMETHODTHATBLANK“PAYEMPTY“MAKETHEWINGRECENTLY,SUCHLARGESCALEPARTSASTHEFUSELAGE,ETCCOMETOSUBSTITUTEALOTOFPARTSTOASSEMBLETHROUGHNUMEROUSRIVET,SCREWANDOTHERCONNECTIONWAY,MAKETHEINTENSITY,RIGIDITYANDDEPENDABILITYOFTHECOMPONENTIMPROVEDALLTHESE,TOPROCESSINGANDEQUIPPINGTHEDEMANDWHICHHASPROPOSEDHIGHSPEED,HIGHPRECISEANDHIGHFLEXIBILITYACCORDINGTOEMO2001EXHIBITIONSITUATION,HIGHSPEEDMACHININGCENTERISITGIVESPEEDCANREACH80M/MINISEVENHIGH,AIRTRANSPORTCOMPETENTSPEEDCANUPTO100M/MINTOBEABOUTTOENTERALOTOFAUTOMOBILEFACTORIESINTHEWORLDATPRESENT,INCLUDINGSHANGHAIGENERALMOTORSCORPORATIONOFOURCOUNTRY,HAVEALREADYADOPTEDANDSUBSTITUTEDANDMADETHELATHEUPWITHTHEPRODUCTIONLINEPARTTHATTHEHIGHSPEEDMACHININGCENTERMAKESUPHYPERMACHLATHEOFUSACINCINNATICOMPANYENTERSTONEARLYBIGGEST60M/MINOFSPEED,ITIS100M/MINTOBEFAST,THEACCELERATIONREACHES2G,THEROTATIONALSPEEDOFTHEMAINSHAFTHASALREADYREACHED60000R/MINPROCESSINGATHINWALLOFPLANEPARTS,SPEND30MINONLY,ANDSAMEPARTGENERALATAHIGHSPEEDMILLINGMACHINEPROCESSANDTAKE3H,THEORDINARYMILLINGMACHINEISBEINGPROCESSEDTONEED8HTHESPEEDANDACCELERATIONOFMAINSHAFTOFDUALMAINSHAFTLATHESOFGERMANYDMGCOMPANYAREUPTO120000R/MMAND1GINMACHININGACCURACY,THEPAST10YEARS,ORDINARYPROGRESSIONACCUSEOFMACHININGACCURACYOFLATHEBRING5MUPTOFROM10MALREADY,ACCURATEGRADESOFMACHININGCENTERFROM35M,RISETO115M,ANDULTRAPRECISIONMACHININGACCURACYISITENTERNANOMETERGRADETOBEGINALREADY001MINDEPENDABILITY,MTBFVALUEOFTHEFOREIGNNUMERICALCONTROLDEVICEHASALREADYREACHEDABOVE6000H,MTBFVALUEOFTHESERVOSYSTEMREACHESABOVE30000H,DEMONSTRATEVERYHIGHDEPENDABILITYINORDERTOREALIZEHIGHSPEED,HIGHFINISHMACHINING,IFTHEPARTOFFUNCTIONRELATEDTOITISELECTRICMAINSHAFT,STRAIGHTLINEELECTRICALMACHINERYGETFASTDEVELOPMENT,THEAPPLICATIONISEXPANDEDFURTHER52LINKANDPROCESSANDCOMPOUNDTOPROCESSTHEFASTDEVELOPMENTOFTHELATHEIN5AXESADOPT5AXLESTOLINKTHEPROCESSINGOFTHETHREEDIMENSIONALCURVEDSURFACEPART,CANCUTWITHTHEBESTGEOMETRYFORMOFTHECUTTER,NOTONLYHIGHLYPOLISHED,BUTALSOEFFICIENCYIMPROVESBYALARGEMARGINITISGENERALLYACKNOWLEDGED,THEEFFICIENCYOFAN5AXLEGEARBEDSCANEQUAL23AXLEGEARBEDS,ISITWAITFORTOUSETHECUBICNITROGEN
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